#include<iostream>

using namespace std;

double warming = 0.3;

void update(double dt);
void local();

int main() {

	cout << "Global warming is " << warming << " degrees.\n";
	update(0.1);
	cout << "Global warming is " << warming << " degrees.\n";
	local();
	cout << "Global warming is " << warming << " degrees.\n";
	return 0;
}